PHP Array Fill Benchmark

arrayFillBenchmark.php

<?php

$max = 10000000;
$testValues = range(1, $max);

echo php_uname();

echo "\nFill Array with appending elements and for loop\n";
$time = microtime(true);
$newArray = [];
for ($i = 0; $i < $max; $i++) {
    $newArray[] = $testValues[$i];
}
$timeDiff = microtime(true) - $time;
echo sprintf("\t%f sec\n", $timeDiff);

echo "\nFill Array with pushing elements and for loop\n";
$time = microtime(true);
$newArray = [];
for ($i = 0; $i < $max; $i++) {
    array_push($newArray, $testValues[$i]);
}
$timeDiff = microtime(true) - $time;
echo sprintf("\t%f sec\n", $timeDiff);

echo "\nFill Array with replacing elements and for loop\n";
$time = microtime(true);
$newArray = array_fill(0, $max, 0);
for ($i = 0; $i < $max; $i++) {
    $newArray[$i] = $testValues[$i];
}
$timeDiff = microtime(true) - $time;
echo sprintf("\t%f sec\n", $timeDiff);

echo "\nFill SplFixedArray with for loop\n";
$time = microtime(true);
$newArray = new SplFixedArray($max);
for ($i = 0; $i < $max; $i++) {
    $newArray[$i] = $testValues[$i];
}
$timeDiff = microtime(true) - $time;
echo sprintf("\t%f sec\n", $timeDiff);

Linux debian 3.2.0-4-amd64 #1 SMP Debian 3.2.65-1+deb7u1 x86_64
Fill Array with appending elements and for loop
2.942950 sec

Fill Array with pushing elements and for loop
8.608578 sec

Fill Array with replacing elements and for loop
3.489419 sec